I. Nhanganyaya
Hydroxyethyl Cellulose (HEC) ipolymer isinganyunguduke mumvura inoshandiswa zvakanyanya mukubvisa mafuta, kuputira, kuvaka, makemikari ezuva nezuva, kugadzira mapepa nedzimwe nzvimbo. HEC inowanikwa nekuchinja kweselulosi nemakemikari, uye hunhu hwayo nekushandiswa kwayo zvinonyanya kutsanangurwa ne hydroxyethyl substituents pamamorekuru eselulosi.
II. Maitiro ekugadzira
Maitiro ekugadzira HEC anosanganisira matanho anotevera: kuputira cellulose, kuisuka, kushaya mvura mumuviri, kuomesa uye kukuya. Zvinotevera ndizvo zvinotsanangurwa zvakadzama padanho rega rega:
Kugadziriswa kwemasero eropa
Cellulose inotanga yabatwa nealkali kuti igadzire alkali cellulose (Cellulose Alkali). Maitiro aya anowanzoitwa mu reactor, uchishandisa sodium hydroxide solution kurapa natural cellulose kuti igadzire alkali cellulose. Maitiro emakemikari ndeekuti:
Sero-OH+NaOH→Sero-O-Na+H2OSero-OH+NaOH→Sero-O-Na+H 2O
Zvadaro, alkali cellulose inopindirana ne ethylene oxide kuti igadzire hydroxyethyl cellulose. Mhinduro yacho inoitwa pasi pekumanikidzwa kwakanyanya, kazhinji 30-100°C, uye mhinduro chaiyo ndeiyi inotevera:
Sero-O-Na+CH2CH2O→Sero-O-CH2CH2OHCSero-O-Na+CH 2CH 2O→Sero-O-CH 2CH 2OH
Kuita uku kunoda kudzorwa kwakanyatsojeka kwekupisa, kumanikidzwa uye huwandu hwe ethylene oxide inowedzerwa kuti ive nechokwadi chekufanana uye kunaka kwechigadzirwa.
Kugeza
HEC isina kugadzirwa inowanzova nealkali isina kugadziriswa, ethylene oxide nezvimwe zvinhu zvinobva mairi, izvo zvinoda kubviswa nekushambidzwa nemvura kakawanda kana kushambidzwa kweorganic solvent. Mvura yakawanda inodiwa panguva yekugeza nemvura, uye mvura yakasviba mushure mekugeza inofanira kugadziriswa nekuburitswa.
Kushaya mvura mumuviri
HEC yakanyorova mushure mekusukwa inofanira kubviswa mvura, kazhinji nekusefa vacuum kana kupatsanurwa kwe centrifugal kuderedza hunyoro.
Kuomesa
HEC isina mvura inoomeswa, kazhinji nekuomesa nepfapfaidzo kana kuomesa nekukurumidza. Tembiricha nenguva zvinofanirwa kudzorwa zvakanyanya panguva yekuomesa kudzivirira kuora kwekupisa kwakanyanya kana kuunganidzana.
Kukuya
HEC block yakaomeswa inofanira kukuyiwa nekusefwa kuti iwane saizi yakafanana yezvikamu, uye pakupedzisira iite upfu kana chigadzirwa chegranular.
III. Hunhu hwekushanda
Kunyungudika kwemvura
HEC inonyungudika zvakanaka mumvura uye inogona kunyungudika nekukurumidza mumvura inotonhora neinodziya kuti igadzire mhinduro inopenya kana inopenya. Hunhu hwekunyungudika uku kunoita kuti ishandiswe zvakanyanya sechinosimbisa uye chinosimbisa muzvipfeko uye zvigadzirwa zvemakemikari zvezuva nezuva.
Kukora
HEC inoratidza simba guru rekukora mumvura, uye kukora kwayo kunowedzera nekuwedzera kwehuremu hwemamorekuru. Hunhu hwekukora uku hunoigonesa kutamba basa mukukora, kuchengetedza mvura uye kuvandudza mashandiro ekuvaka mumachira emvura nemamota ekuvaka.
Rheology
Mhinduro yemvura yeHEC ine hunhu hwakasiyana hwe rheological, uye viscosity yayo inochinja nekuchinja kwe shear rate, zvichiratidza shear thinner kana pseudoplasticity. Hunhu uhwu hwe rheological hunoita kuti ikwanise kugadzirisa fluidity uye mashandiro ekuvaka muma coating uye oilfield drilling fluids.
Kubatanidza uye kumisa
HEC ine hunhu hwakanaka hwe emulsification uye suspension, izvo zvinogona kudzikamisa zvidimbu zvakasungirirwa kana madonhwe mu dispersion system kudzivirira stratification uye sedimentation. Saka, HEC inowanzo shandiswa muzvigadzirwa zvakaita se emulsion coatings uye drug suspensions.
Kuora kwezvinhu zvipenyu
HEC chinhu chinobva mu cellulose chechisikigo chine mukana wekuora zvakanaka, hachina kusvibiswa kwezvakatipoteredza, uye chinosangana nezvinodiwa zvekuchengetedzwa kwezvakatipoteredza zvakasvibira.
IV. Minda Yekushandisa
Kupfeka
Mumachira anogadzirwa nemvura, HEC inoshandiswa sechinosimbisa uye chinosimbisa mafambiro emvura, mashandiro ekuvaka uye hunhu hwemachira hunodzivirira kudonha kwemvura.
Kuvaka
Muzvinhu zvekuvaka, HEC inoshandiswa mumota yakagadzirwa nesimende uye putty powder kuvandudza mashandiro ekuvaka uye kuchengetedza mvura.
Makemikoro Ezuva Nezuva
Muma sipo, shampoo, uye toothpaste, HEC inoshandiswa sechinosimbisa uye chinosimbisa kuti chigadzirwa chinzwe uye chigadzikane.
Minda yemafuta
Mukuchera nekupwanya mafuta munzvimbo yemafuta, HEC inoshandiswa kugadzirisa hunhu hwerheology uye hunhu hwekumisikidzwa kwemvura yekuboora uye kuvandudza kushanda zvakanaka uye kuchengetedzeka kwekuchera.
Kugadzira mapepa
Mukugadzira mapepa, HEC inoshandiswa kudzora kuyerera kwemvura mupepa uye kuvandudza kufanana uye hunhu hwepamusoro hwepepa.
Hydroxyethyl cellulose (HEC) yave ichishandiswa zvakanyanya mumaindasitiri akawanda nekuda kwekunyungudika kwayo mumvura, kukora kwayo, hunhu hwe rheological, hunhu hwe emulsification uye suspension, pamwe nekuora zvakanaka kwe biogradable. Maitiro ayo ekugadzira akura zvishoma. Kuburikidza nematanho e cellulose etherification, kushambidzwa, kupera mvura mumuviri, kuomesa nekukuya, zvigadzirwa zveHEC zvine mashandiro akagadzikana uye emhando yakanaka zvinogona kugadzirwa. Mune ramangwana, nekuvandudzwa kwezvinodiwa zvekuchengetedza zvakatipoteredza uye kufambira mberi kwetekinoroji, mikana yekushandiswa kweHEC ichave yakakura.
Nguva yekutumira: Chikunguru-02-2024